CDC confirms onions caused McDonald's E. coli outbreak

Oct. 30 (UPI) -- Slivered onions served on McDonald's Quarter Pounders and other menu items caused a recent E. coli outbreak, the U.S. Centers for Disease Control and Prevention announced Wednesday.

The CDC began investigating the E. coli outbreak on Oct. 22 and identified 90 cases that caused one death and 27 hospitalizations in 13 states.

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